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公开(公告)号:EP4365895A3
公开(公告)日:2024-07-17
申请号:EP24165639.6
申请日:2016-06-10
发明人: SCHNELL, Markus , LUTZKY, Manfred , FOTOPOULOU, Eleni , SCHMIDT, Konstantin , BENNDORF, Conrad , TOMASEK, Adrian , ALBERT, Tobias , SEIDL, Timon
IPC分类号: G10L19/02 , G10L19/022
CPC分类号: G10L19/022 , G10L19/0212
摘要: A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of 1/4 of the frame length.
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公开(公告)号:EP4375997A2
公开(公告)日:2024-05-29
申请号:EP24165642.0
申请日:2016-06-10
发明人: SCHNELL, Markus , LUTZKY, Manfred , FOTOPOULOU, Eleni , SCHMIDT, Konstantin , BENNDORF, Conrad , TOMASEK, Adrian , ALBERT, Tobias , SEIDL, Timon
IPC分类号: G10L19/022
CPC分类号: G10L19/022 , G10L19/0212
摘要: A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of 1/4 of the frame length.
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公开(公告)号:EP4239633A3
公开(公告)日:2023-11-01
申请号:EP23174596.9
申请日:2016-06-10
发明人: SCHNELL, Markus , LUTZKY, Manfred , FOTOPOULOU, Eleni , SCHMIDT, Konstantin , BENNDORF, Conrad , TOMASEK, Adrian , ALBERT, Tobias , SEIDL, Timon
IPC分类号: G10L19/02 , G10L19/022
摘要: A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of 1/4 of the frame length.
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公开(公告)号:EP4207191A1
公开(公告)日:2023-07-05
申请号:EP23157131.6
申请日:2019-11-05
发明人: BAYER, Stefan , Maben, Pallavi , RAVELLI, Emmanuel , FUCHS, Guillaume , FOTOPOULOU, Eleni , MULTRUS, Markus
IPC分类号: G10L19/022 , G10L25/45 , G10L19/008
摘要: An apparatus for providing a processed audio signal representation on the basis of input audio signal representation configured to apply an un-windowing, in order to provide the processed audio signal representation on the basis of the input audio signal representation. The apparatus is configured to adapt the un-windowing in dependence on one or more signal characteristics and/or in dependence on one or more processing parameters used for a provision of the input audio signal representation.
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公开(公告)号:EP3588495A1
公开(公告)日:2020-01-01
申请号:EP18179373.8
申请日:2018-06-22
发明人: BÜTHE, Jan , FOTOPOULOU, Eleni , KORSE, Srikanth , MABEN, Pallavi , MULTRUS, Markus , REUTELHUBER, Franz
IPC分类号: G10L19/008 , G10L19/02 , G10L19/06
摘要: In multichannel audio coding, improved computational efficiency is achieved by computing comparison parameters for ITD compensation between any two channels in the frequency domain for a parametric audio encoder. This may mitigate negative effects on encoder parameter estimates.
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公开(公告)号:EP3539126A1
公开(公告)日:2019-09-18
申请号:EP17791415.7
申请日:2017-10-30
发明人: BUETHE, Jan , FUCHS, Guillaume , JAEGERS, Wolfgang , REUTELHUBER, Franz , HERRE, Juergen , FOTOPOULOU, Eleni , MULTRUS, Markus , KORSE, Srikanth
IPC分类号: G10L19/008 , H04S3/00
摘要: An apparatus for downmixing a multi-channel signal having at least two channels, has: a downmixer for calculating a downmix signal from the multi-channel signal, wherein the downmixer is configured to calculate the downmix using an absolute phase compensation, so that a channel having a lower energy among the at least two channels is only rotated or is rotated stronger than a channel having a greater energy in calculating the downmix signal; and an output interface for generating an output signal, the output signal having information on the downmix signal.
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公开(公告)号:EP3405949A1
公开(公告)日:2018-11-28
申请号:EP17700707.7
申请日:2017-01-20
发明人: BAYER, Stefan , FOTOPOULOU, Eleni , MULTRUS, Markus , FUCHS, Guillaume , RAVELLI, Emmanuel , SCHNELL, Markus , DÖHLA, Stefan , JÄGERS, Wolfgang , DIETZ, Martin , MARKOVIC, Goran
IPC分类号: G10L19/008 , G10L19/02
摘要: An apparatus for encoding a multi-channel signal comprising at least two channels, comprises: a time-spectral converter (1000) for converting sequences of blocks of sample values of the at least two channels into a frequency domain representation having sequences of blocks of spectral values for the at least two channels, wherein a block of sampling values has an associated input sampling rate, and a block of spectral values of the sequences of blocks of spectral values has spectral values up to a maximum input frequency (1211) being related to the input sampling rate; a multi-channel processor (1010) for applying a joint multi-channel processing to the sequences of blocks of spectral values or to resampled sequences of blocks of spectral values to obtain at least one result sequence of blocks of spectral values comprising information related to the at least two channels; a spectral domain resampler (1020) for resampling the blocks of the result sequences in the frequency domain or for resampling the sequences of blocks of spectral values for the at least two channels in the frequency domain to obtain a resampled sequence of blocks of spectral values, wherein a block of the resampled sequence of blocks of spectral values has spectral values up to a maximum output frequency (1231, 1221) being different from the maximum input frequency (1211); a spectral-time converter for converting the resampled sequence of blocks of spectral values into a time domain representation or for converting the result sequence of blocks of spectral values into a time domain representation comprising an output sequence of blocks of sampling values having associated an output sampling rate being different from the input sampling rate; and a core encoder (1040) for encoding the output sequence of blocks of sampling values to obtain an encoded multi-channel signal (1510).
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公开(公告)号:EP3107096A1
公开(公告)日:2016-12-21
申请号:EP15189398.9
申请日:2015-10-12
发明人: SCHNELL, Markus , LUTZKY, Manfred , FOTOPOULOU, Eleni , SCHMIDT, Konstantin , BENNDORF, Conrad , TOMASEK, Adrian , ALBERT, Tobias , SEIDL, Timon
IPC分类号: G10L19/02 , G10L19/022
CPC分类号: G10L19/0212 , G10L19/022
摘要: A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of 1/4 of the frame length.
摘要翻译: 如果用于缩小音频解码的合成窗口是非缩减音频解码过程中涉及的参考合成窗口的下采样版本,则可以更有效地和/或改进符合性维护,缩减版本的音频解码过程可以通过下采样 下采样因子通过下采样采样率和原始采样率偏离,并使用帧长度的1/4的段中的段插值下采样。
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公开(公告)号:EP4435783A2
公开(公告)日:2024-09-25
申请号:EP24194360.4
申请日:2019-04-03
发明人: FOTOPOULOU, Eleni , BÜTHE, Jan , RAVELLI, Emmanuel , MABEN, Pallavi , DIETZ, Martin , REUTELHUBER, Franz , DÖHLA, Stefan , KORSE, Srikanth
IPC分类号: G10L25/06
CPC分类号: G10L19/008 , G10L25/06
摘要: An apparatus for estimating an inter-channel time difference between a first channel signal and a second channel signal, comprises a signal analyzer (1037) for estimating a signal characteristic (1038) of the first channel signal or the second channel signal or both signals or a signal derived from the first channel signal or the second channel signal; a calculator (1020) for calculating a cross-correlation spectrum for a time block from the first channel signal in the time block and the second channel signal in the time block; a weighter (1036) for weighting a smoothed or non-smoothed cross-correlation spectrum to obtain a weighted cross correlation spectrum using a first weighting procedure (1036a) or using a second weighting procedure (1036b) depending on a signal characteristic estimated by the signal analyzer (1037), wherein the first weighting procedure is different from the second weighting procedure; and a processor (1040) for processing the weighted cross-correlation spectrum to obtain the inter-channel time difference.
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公开(公告)号:EP4386746A2
公开(公告)日:2024-06-19
申请号:EP24165638.8
申请日:2016-06-10
发明人: SCHNELL, Markus , LUTZKY, Manfred , FOTOPOULOU, Eleni , SCHMIDT, Konstantin , BENNDORF, Conrad , TOMASEK, Adrian , ALBERT, Tobias , SEIDL, Timon
IPC分类号: G10L19/022
CPC分类号: G10L19/022 , G10L19/0212
摘要: A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of 1/4 of the frame length.
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